Their body language shows the truth. Of course, one of the guys truly believes what he says, but another guy is lying that he believes in a flat earth.
https://www.youtube.com/watch?v=0t1atSIfZ0AMy favorite part was the man who created the first mechanical model of the flat earth, which I'm sure were quite expensive. Watching himself talk about going to secret hidden continents to repopulate the earth, and then patting his stomach when he talked about repopulation, as if he was going to be personally involved in the process, was hilarious.
Of course, just as funny was the man who built his own rocket to go up into the atmosphere himself, but it was a total flop and he crash landed. He could have saved himself a lot of time and money and just drove up to Pike's Peak in Colorado. It's much easier.
I also want to note that, although the maker of this video is obviously not a Christian, and likely mocks the Christian God of the Bible to his own destruction, he is correct in the analysis of the body language, and he is correct that these people are seeking a "higher purpose" and to "feel special." If they want a higher purpose and to feel special, check out God's Word; then you don't need to lie and "conspiracy ministries" to learn a bunch of unbiblical garbage.